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<p>[QUOTE=&quot;ValpoBeginner, post: 2649038, member: 77066&quot;]Let&#039;s see if I&#039;m correct, verdigris is oxidized copper and carbon . So the formula would look something like Cu2CO2, sorry don&#039;t know how to do subscript without Microsoft Word .&nbsp; </p><p><br /></p><p>You somehow want to just remove the verdigris without harming the coin. So you want to break the bond between the Cu and the O2, so both dissolve.&nbsp; I don&#039;t think you need much more than a few household chemicals. Some Sodium Hydroxide?&nbsp; Perhaps Eletro chemistry is involved. IDK....! </p><p><br /></p><p>Im done trying to remember all that stuff from 20 years ago.&nbsp; Ok I&#039;m ready for the big reveal.[/QUOTE]</p><p><br /></p>

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